1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.taglib.portlet;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.util.MethodInvoker;
28  import com.liferay.portal.kernel.util.MethodWrapper;
29  import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
30  import com.liferay.portal.kernel.util.StringPool;
31  
32  import javax.servlet.jsp.JspException;
33  import javax.servlet.jsp.PageContext;
34  import javax.servlet.jsp.tagext.TagSupport;
35  
36  /**
37   * <a href="RenderURLParamsTag.java.html"><b><i>View Source</i></b></a>
38   *
39   * @author Brian Wing Shun Chan
40   */
41  public class RenderURLParamsTag extends TagSupport {
42  
43      public static String doTag(String varImpl, PageContext pageContext)
44          throws Exception {
45  
46          Object returnObj = null;
47  
48          Thread currentThread = Thread.currentThread();
49  
50          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
51  
52          try {
53              currentThread.setContextClassLoader(
54                  PortalClassLoaderUtil.getClassLoader());
55  
56              MethodWrapper methodWrapper = new MethodWrapper(
57                  _TAG_CLASS, _TAG_DO_END_METHOD,
58                  new Object[] {varImpl, pageContext});
59  
60              returnObj = MethodInvoker.invoke(methodWrapper);
61          }
62          catch (Exception e) {
63              _log.error(e, e);
64  
65              throw e;
66          }
67          finally {
68              currentThread.setContextClassLoader(contextClassLoader);
69          }
70  
71          if (returnObj != null) {
72              return returnObj.toString();
73          }
74          else {
75              return StringPool.BLANK;
76          }
77      }
78  
79      public int doEndTag() throws JspException {
80          try {
81              doTag(_varImpl, pageContext);
82          }
83          catch (Exception e) {
84              if (e instanceof JspException) {
85                  throw (JspException)e;
86              }
87              else {
88                  throw new JspException(e);
89              }
90          }
91  
92          return EVAL_PAGE;
93      }
94  
95      public void setVarImpl(String varImpl) {
96          _varImpl = varImpl;
97      }
98  
99      private static final String _TAG_CLASS =
100         "com.liferay.portal.servlet.taglib.portlet.RenderURLParamsTagUtil";
101 
102     private static final String _TAG_DO_END_METHOD = "doEndTag";
103 
104     private static Log _log = LogFactoryUtil.getLog(RenderURLParamsTag.class);
105 
106     private String _varImpl;
107 
108 }